Russian draughts, duel

1. White moves first; a checker moves one square diagonally forward.
2. Capturing is mandatory, and checkers can capture backward too.
3. If another capture follows a jump, you must continue.
4. A checker reaching the far row becomes a queen that moves any distance diagonally.

Russian draughts, duel is the best-loved form of checkers across Russia and the former Soviet states. White moves first, and a regular checker moves one square diagonally forward, but it can capture both forward and backward. Capturing is mandatory, and if another capture is available after a jump, you must keep going. A checker that reaches the far row becomes a queen, which moves any distance along a diagonal and can land on any free square beyond a captured piece. You win by taking all of your opponent's pieces or leaving them with no legal move. Because captures are forced, setting up sacrifices that drag enemy pieces into a trap is a big part of the strategy.